Hot top for ingot molds



w. YH. SOMMER HOT TOP FOR I'NGOT MOLDS Filed Nov. 21.. 1923 SMR www.

Y I 5M Patented Dec. 8, 1925.

41,565,113 PATENT] oFFIcE.

WILL-IAM H. SOMMER, oF PEORIA, ILLINOIS..

Application ledNovember 21, 1923. Serial No. 676,186.

To all whom it may concern.'

Be it known that I, WILLIAM H. SOMMER, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Hot Tops for Ingot Molds, of which the following is a specificatlon.

This invention has for ingot-molds. Y

The principal object of the` invention is reference to hot-tops the useof my improved hot-top for ingotmolds, to prevent or reduce the formation of the pipe or shrinkage cavitythat occurs in ingots duringV solidific'ation or freezing.

The invention has for a furtherl object to provide for ingots-molds, a hot-top toact as a reservoir for an excess supply of molten metal, so that during the solidilication or freezing of the ingot', and inthe event of a pipe, or shrinkage cavity ingot during solidification,

the pipe or cavity being formed. r A further object of the invention is to provide a hot-top for ingoia-molds which is p preferably made in the form of a hollow flanged member into which asuitable molding sand, orrefractory material may be tamped, and leaving a centrall opening therethru, preferably of the Vsame cross`J section as the top of the mold, whereby,

whatever solidified metal is left in the hottop when the mold is stripped from the ingot a larger yield may be obtained, without subsequent loss by` cropping.l

That the invention .may be more fully understood reference is had to the accompanying drawing forming a part of the description, illustrating a preferred embodiment of the invention in whichzf Fig. 1 shows by dotted lines a common form of ingot-mold and stool and in crosssection my improved hot-top thereon;

Fig. 2 is a plan view of Fig. 1; l

Fig.3 is a view similar to Fig. 1 except Ithe mold is o f the'inverted type;

Fig. 4 isauplan view of Fig. 3;

Fig. 5 is a detail view on a largerjscale showin in .cross-section my improved hottop, and

Fi 6 is a plan view of my hot-top.

Lie, characters of reference denote corresponding partsthruout the figures.

In Figs. 1 and 2 I have shown in dotted lines the usual ingot-mold 1 and Va stool 2,

forming in thev such molten' metal in the hot-top will r'un into and fill channel with a top flange 6 of greater width v than the lower flange 7, and in said-chan- Y nel is tamped or otherwise packed, suitable e moldin sand 8, or other suitable refractory materia l/Vhen the material 8 is tamped packed `around the peripheral face of the flange 7, and an opening 9 is formed thru the hot-top which in cross-section' is the cross-section of the width ofthe opening formed by the flange 6, which also correspends in cross-section to the'opening in the mold at the top thereof. Making the opening formed by the flange 7 largerthan the flange 6, and-filling the space"between the flange 7 and the inner wall of the opening. 9 -thru the hot-top with molding-sand,- or suitable refractory material, when the hottop is placed on the top of the mold, the opening in the top of the mold will be surrounded by the sand or refractory material, as shown in Figs. 1 and (3. This will prevent the molten .metal being poured 1nto the mold from passing out between the hottop and the top of the mold. In view of 'into the channel of the hot-top it is alsothe fact that the end of the ingot-mold is Y on the end of the mold.

Assuming the mold being in position to receive molten metal from a ladle or other pouring means and the hot-top is in position on the top of the mold, the pouring continues until the hot-top is filled, or partially filled, with the molten metal. fractory material in the hot-top acts as an The sand or reinsulator and will keep .the metal in the hottop in a molten state much longer than would the ingot-mold, and in the event of la pipe or cavity forming in the lngot, the metal in the hot-top, which is 1n a molten state, will run into and fill the pipe or cavity forming in said mold. In-manyinstances very little of the metal in the hottopfwill flow or run into the mold, because of the lack ofA pipe or cavity forming, and

the cross-section of the metal in the hot-top escapel of any gases accumulating in the hot-top.

What I claim is 1. A hot-top for ingot-molds, comprising a. channeledbody vformed by inturned top and bottom flange, the flanges at the top end being of greater width than at the bottom end, and an insulating filling for said -body with an opening therethru, in crosssection corresponding to the opening thru the top of said flanges and with the opening at the topv of said mold.

2. A hot-top for ingot-molds, comprising. a channeled body formed by inturned topy and' bottom flange, the flange at one end being of greater width than at the other end,

and an insulating filling for said body with 'an opening therethru corresponding to the opening thru the flange having the greatest width, said filling also being packed in front of the peripheral face of the narrow flange and forming a facing together with said flanges for one end of said body.

3. A hot-top -or ingot-molds, comprising I abodyformed with an opening therethru the cross-section of which is the same as the cross-section of the opening in the top of the mold, and also provided with an interiorly arranged channel conforming to the contour of said body, the outer wall vof the channel being provided with vent openings,

and an insulatingV lling in said channel A having an openingtherethru corresponding to the opening thru said body. Y

4. A hot-top for ingot-molds', comprising a body formed with a channeled interior and an opening therethru the` cross-section of which is substantiallythe same as the cross-section of the opening in the top of the Iold, and means 'for venting the channel.

5. A hot-top for ingot-molds, comprising a body formed with a channeled interior produced by top and bottom flanges, said flanges each having openings therethru, the bottom flange enclosing an area of larger cross-section than that enclosed by the top flange.

6. A hot-top for ingot-molds, comprising a body formed with a channeled interior produced by top and bottom flanges, said flanges each having openings therethru,I the area enclosed by the bottom flange of greater cross-section than that enclosed by the top flange, and an insulating filling packed in said body between said flanges and having an opening therethru corresponding, in cross-section, to the opening thru the top of said flanges and with the opening at the top of said mold.

7. A hot-top for ingot-molds, comprising a body formed with a channeled interior produced by top and bottom flanges, said flanges each having openings therethru, one having a larger cross-section than the other, and the opening thru-one of said flanges in cross-section being the same as the crosssection of the opening in the top ofthe mold.

8. A hot-top for ingot-molds, comprisinga body formed with a channeled interior' produced by top and bottom flanges, said flanges each having openings therethru, the

opening in the top flange having a larger cross-section than the lower and corresponding to the vcross-section of the opening at'the top of the mold, and an insulating filling packed in said body between said-flanges and partially filling the opening formed by the lower flange, so as to provide an insulator for a part of the end of the body intended to rest on the mold.

. Signed at Peoria, in the county of Peoria and State of Illinois, this 14th day of November, A. D. 1923.

l WILLIAM H. SOMMER. 

